1. Sistema Respiratorio
Prof. Mario Tacher
MSP 21-Nivel Elemental

2. Energy-rich fuel molecules from food
Respiratory
medium
(air or water) O2
CO2
Respiratory
surface
Organismal
level
Circulatory system
Cellular level
Energy-rich
fuel molecules
from food
Cellular respiration
ATP

3. Paramecium: Un Protisto

4. Esponja
Cnidario

5. LE 42-20a
Gills
Coelom
Tube foot
Estrella de Mar

6. LE 42-20c
Gills
Almeja

7. LE 42-20d
Gills
Langostino

8. Respiración en los Peces.
Oxygen-poor
blood
Lamella
Oxygen-rich
blood
Gill
arch
Gill
arch
Blood
vessel
15%
40%
Water
flow
70% 5%
30%
Operculum
100%
60%
90%
Water flow
over lamellae
showing % O2 O2
Blood flow
through capillaries
in lamellae
showing % O2
Gill
filaments
Countercurrent exchange

9. Sistemas Traqueales en los Insectos
Tracheae
Air sacs
Spiracle

10. Sistemas Traqueales en los Insectos
Body
cell
Air
sac
Tracheole
Trachea
Air
Body wall
Tracheoles
Mitochondria
Myofibrils
2.5 µm

11. Pulmones

12. LE 42-5 Anterior vena cava Capillaries of head and forelimbs Pulmonary
artery
Pulmonary
artery
Capillaries
of right lung
Aorta
Capillaries
of left lung
Pulmonary
vein
Pulmonary
vein
Right atrium
Left atrium
Right ventricle
Left ventricle
Posterior
vena cava
Aorta
Capillaries of
abdominal organs
and hind limbs

13. Respiración en Mamíferos
Branch
from
pulmonary
artery
(oxygen-poor
blood)
Branch
from
pulmonary
vein
(oxygen-rich
blood)
Terminal
bronchiole
Nasal
cavity
Pharynx
Alveoli
Larynx
Left
lung
Esophagus
50 µm
Trachea
Right
lung
50 µm
Bronchus
Bronchiole
Diaphragm
Heart
SEM
Colorized SEM

14. Respiración en Mamíferos
Rib cage gets
smaller as
rib muscles
relax
Rib cage
expands as
rib muscles
contract
Air
inhaled
Air
exhaled
Lung
Diaphragm
INHALATION
Diaphragm contracts
(moves down)
EXHALATION
Diaphragm relaxes
(moves up)

15. Respiración en Mamíferos
Cerebrospinal
fluid
Pons
Breathing
control
centers
Medulla
oblongata
Carotid
arteries
Aorta
Diaphragm
Rib muscles

16. Molécula de Hemoglobina
Heme group
Iron atom
O2 loaded
in lungs
O2 unloaded
in tissues
Polypeptide chain